Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas pessoas o prefeito Olav Martin Vik presidiu?
 ###Tabelas: CREATE TABLE number_of_children_involved_in_ilo_categories_of_work_by_age_and_gender (number_of_children_involved_in_ilo_categories_of_work_by_age_and_gender_id AUTO_INCREMENT PRIMARY KEY, All Children ('000s) INT, Economically Active Children ('000s) INT, Economically Active Children (%) INT, Child Labour ('000s) INT, Child Labour (%) INT, Children In Hazardous Work ('000s) INT, Children In Hazardous Work (%) INT) CREATE TABLE municipalities_of_midhordland (municipalities_of_midhordland_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Innhabitants INT, Area INT, Mayor VARCHAR, Party VARCHAR, Municipal code INT, Language form VARCHAR) CREATE TABLE medals (medals_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Nation VARCHAR, Gold INT, Silver INT, Bronze INT, Total INT) CREATE TABLE season_18:_1954 (season_18:_1954_id AUTO_INCREMENT PRIMARY KEY, Episode VARCHAR, Title VARCHAR, Writer(s) VARCHAR, Preservation VARCHAR, Original airdate VARCHAR) CREATE TABLE ncaa_consensus_all-american_team (ncaa_consensus_all-american_team_id AUTO_INCREMENT PRIMARY KEY, Position VARCHAR, Name VARCHAR, School VARCHAR, Unanimous VARCHAR, College Hall of Fame VARCHAR)  
SELECT AVG Innhabitants FROM municipalities_of_midhordland WHERE Mayor = olav martin vik